NVD Vulnerability Detail
Search Exploit, PoC
CVE-2020-8835
Summary

In the Linux kernel 5.5.0 and newer, the bpf verifier (kernel/bpf/verifier.c) did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series, starting with v5.4.7, as the introducing commit was backported to that branch. This vulnerability was fixed in 5.6.1, 5.5.14, and 5.4.29. (issue is aka ZDI-CAN-10780)

Publication Date April 3, 2020, 3:15 a.m.
Registration Date Jan. 26, 2021, 12:02 p.m.
Last Update Nov. 21, 2024, 2:39 p.m.
CVSS3.1 : HIGH
スコア 7.8
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
攻撃元区分(AV) ローカル
攻撃条件の複雑さ(AC) 低
攻撃に必要な特権レベル(PR) 低
利用者の関与(UI) 不要
影響の想定範囲(S) 変更なし
機密性への影響(C) 高
完全性への影響(I) 高
可用性への影響(A) 高
CVSS2.0 : HIGH
Score 7.2
Vector AV:L/AC:L/Au:N/C:C/I:C/A:C
攻撃元区分(AV) ローカル
攻撃条件の複雑さ(AC) 低
攻撃前の認証要否(Au) 不要
機密性への影響(C) 高
完全性への影響(I) 高
可用性への影響(A) 高
Get all privileges. いいえ
Get user privileges いいえ
Get other privileges いいえ
User operation required いいえ
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.4.7 5.4.29
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.5.0 5.5.14
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.6 5.6.1
Configuration2 or higher or less more than less than
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:netapp:a700s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:a700s:-:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:netapp:8300_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:8300:-:*:*:*:*:*:*:*
Configuration7 or higher or less more than less than
cpe:2.3:o:netapp:8700_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:8700:-:*:*:*:*:*:*:*
Configuration8 or higher or less more than less than
cpe:2.3:o:netapp:a400_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:a400:-:*:*:*:*:*:*:*
Configuration9 or higher or less more than less than
cpe:2.3:o:netapp:a320_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:a320:-:*:*:*:*:*:*:*
Configuration10 or higher or less more than less than
cpe:2.3:o:netapp:c190_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:c190:-:*:*:*:*:*:*:*
Configuration11 or higher or less more than less than
cpe:2.3:o:netapp:a220_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:a220:-:*:*:*:*:*:*:*
Configuration12 or higher or less more than less than
cpe:2.3:o:netapp:fas2720_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:fas2720:-:*:*:*:*:*:*:*
Configuration13 or higher or less more than less than
cpe:2.3:o:netapp:fas2750_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:fas2750:-:*:*:*:*:*:*:*
Configuration14 or higher or less more than less than
cpe:2.3:o:netapp:a800_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:a800:-:*:*:*:*:*:*:*
Configuration15 or higher or less more than less than
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
Configuration16 or higher or less more than less than
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
Configuration17 or higher or less more than less than
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
Configuration18 or higher or less more than less than
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*
Configuration19 or higher or less more than less than
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*
Configuration20 or higher or less more than less than
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*
Configuration21 or higher or less more than less than
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
Configuration22 or higher or less more than less than
cpe:2.3:o:netapp:h610c_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h610c:-:*:*:*:*:*:*:*
Configuration23 or higher or less more than less than
cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h610s:-:*:*:*:*:*:*:*
Configuration24 or higher or less more than less than
cpe:2.3:o:netapp:h615c_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h615c:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
Linux Kernel におけるバッファエラーの脆弱性
Title Linux Kernel におけるバッファエラーの脆弱性
Summary

Linux Kernel には、バッファエラーの脆弱性が存在します。 Zero Day Initiative は、本脆弱性に ZDI-CAN-10780 を採番していました。

Possible impacts 情報を取得される、情報を改ざんされる、およびサービス運用妨害 (DoS) 状態にされる可能性があります。
Solution

ベンダ情報および参考情報を参照して適切な対策を実施してください。
Publication Date March 30, 2020, midnight
Registration Date April 23, 2020, 2:08 p.m.
Last Update April 23, 2020, 2:08 p.m.
Affected System
Fedora Project
Fedora 
Canonical
Ubuntu 
Linux
Linux Kernel 
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
Change Log
No Changed Details Date of change
1 [2020年04月23日]
  掲載		 April 23, 2020, 2:08 p.m.